Hello, you need to run the ContactsDetail NavigationDrawer activity from the MenuMain NavigationDrawer.I write a bug. How to fix it? Thank you https://hastebin.com/xanowezila.cpp

@jurajsolarml check on line number 61. Is that valid class?

ok, I'm solving it :))

Great! So, what's when wrong?

Rightly should be: override fun onNavigationItemSelected(item: MenuItem): Boolean { // Handle navigation view item clicks here. when (item.itemId) { R.id.navmenu_main_contacts -> { // Handle the Contacts action val intent = Intent(this, ContactsDetail::class.java) startActivity(intent) //activity_contacts_detail } R.id.navmenu_main_mapa -> { val intent = Intent(this, MapsActivity::class.java) startActivity(intent)

Cool man

👍